<?php
/*
Challenge 1: Modify Test::$secret before it's output.
Rules::
1. No use of Reflection API / runkit extension
2. No stopping execution before Test::run()
3. No Exceptions or PHP errors / warnings notices allowed
Hints:
1. Caesar
2. Magic methods
3. Requires a new feature of PHP 5.4
*/
class Test
{
private $secret = 'Nyy lbhe Onfr ner orybat gb hf.';
private $callback;
final public function run()
{
call_user_func($this->callback);
return $this->secret . PHP_EOL;
}
public function __set($k, $v)
{
$key = $v[($v[$v])]; // $v is some kind of weird array
$value = $v(); // and a callback!
$this->{$key} = $value;
}
}
$test = new Test;
// start editing here
$test->$callback = $test->__set($test->$callback, 'secret');
// end editing here
echo $test->run();
Warning: Undefined variable $callback in /in/XFrt5 on line 45
Warning: Undefined property: Test::$ in /in/XFrt5 on line 45
Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/XFrt5:33
Stack trace:
#0 /in/XFrt5(45): Test->__set(NULL, 'secret')
#1 {main}
thrown in /in/XFrt5 on line 33
Process exited with code 255.
Notice: Undefined variable: callback in /in/XFrt5 on line 45
Notice: Undefined property: Test::$ in /in/XFrt5 on line 45
Warning: Illegal string offset 'secret' in /in/XFrt5 on line 33
Warning: Illegal string offset 's' in /in/XFrt5 on line 33
Fatal error: Uncaught Error: Call to undefined function secret() in /in/XFrt5:34
Stack trace:
#0 /in/XFrt5(45): Test->__set(NULL, 'secret')
#1 {main}
thrown in /in/XFrt5 on line 34
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Warning: Illegal string offset 'secret' in /in/XFrt5 on line 33
Warning: Illegal string offset 's' in /in/XFrt5 on line 33
Fatal error: Uncaught Error: Call to undefined function secret() in /in/XFrt5:34
Stack trace:
#0 /in/XFrt5(45): Test->__set(NULL, 'secret')
#1 {main}
thrown in /in/XFrt5 on line 34
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Notice: Undefined variable: callback in /in/XFrt5 on line 45
Fatal error: Uncaught Error: Cannot access empty property in /in/XFrt5:45
Stack trace:
#0 {main}
thrown in /in/XFrt5 on line 45
Process exited with code 255.
Notice: Undefined variable: callback in /in/XFrt5 on line 45
Fatal error: Cannot access empty property in /in/XFrt5 on line 45
Process exited with code 255.
Output for 5.0.5
Notice: Undefined variable: callback in /in/XFrt5 on line 45
Notice: Undefined variable: callback in /in/XFrt5 on line 45
Fatal error: Cannot access empty property in /in/XFrt5 on line 45
Process exited with code 255.
Output for 5.0.4
Notice: Undefined variable: callback in /in/XFrt5 on line 45
Notice: Undefined variable: callback in /in/XFrt5 on line 45
Notice: Undefined property: Test::$ in /in/XFrt5 on line 45
Fatal error: Call to undefined function secret() in /in/XFrt5 on line 34
Process exited with code 255.
Output for 5.0.0 - 5.0.3
Notice: Undefined variable: callback in /in/XFrt5 on line 45
Notice: Undefined variable: callback in /in/XFrt5 on line 45
Notice: Undefined property: Test::$ in /in/XFrt5 on line 45
Fatal error: Call to undefined function secret() in /in/XFrt5 on line 34
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/XFrt5 on line 21
Process exited with code 255.
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/XFrt5 on line 21
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/XFrt5 on line 21
Process exited with code 255.